[Bug]: Nextcloud 33 tries to load missing `/core/js/systemtags.js`

### ⚠️ This issue respects the following points: ⚠️

- [x] This is a **bug**, not a question or a configuration/webserver/proxy issue.
- [x] This issue is **not** already reported on [Github](https://github.com/nextcloud/server/issues?q=is%3Aopen+is%3Aissue+label%3Abug) OR [Nextcloud Community Forum](https://help.nextcloud.com/) _(I've searched it)_.
- [x] Nextcloud Server **is** up to date. See [Maintenance and Release Schedule](https://github.com/nextcloud/server/wiki/Maintenance-and-Release-Schedule) for supported versions.
- [x] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/).

### Bug description

The workflowengine app attempts to load a non-existent JavaScript file `core/js/systemtags.js` in Nextcloud 33.

This results in an error in the logs when opening the workflow settings page.

### Steps to reproduce

1. Go to /index.php/settings/user/workflow
2. Check the logs


### Expected behavior

No missing resource should be loaded and no error should appear in logs.

### Nextcloud Server version

33

### Operating system

Debian/Ubuntu

### PHP engine version

PHP 8.4

### Web server

Apache (supported)

### Database engine version

MariaDB

### Is this bug present after an update or on a fresh install?

Updated from a MINOR version (ex. 32.0.1 to 32.0.2)

### Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

### What user-backends are you using?

- [x] Default user-backend _(database)_
- [ ] LDAP/ Active Directory
- [ ] SSO - SAML
- [ ] Other

### Configuration report

```json
{
    "system": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "localhost",
            "10.10.1.0",
            "192.168.1.2",
            "cloud.domain.com"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "default_phone_region": "RU",
        "version": "33.0.0.16",
        "overwrite.cli.url": "https:\/\/cloud.domain.com",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "loglevel": 2,
        "maintenance": false,
        "maintenance_window_start": 2,
        "defaultapp": "files",
        "mail_smtpmode": "disable",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "disable_analytics": true,
        "theme": "",
        "config_preset": 3,
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 0,
            "timeout": 0
        },
        "serverid": "764ecb56d98e4310e56447cf71332142",
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "twofactor_enforced": "true",
        "twofactor_enforced_groups": [
            "admin",
            "users",
            "guest_app"
        ],
        "twofactor_enforced_excluded_groups": [],
        "app_install_overwrite": [],
        "overwriteprotocol": "https",
        "enforce_theme": ""
    }
}
```

### List of activated Apps

```shell
Enabled:
  - activity: 6.0.0-dev.0
  - bruteforcesettings: 6.0.0-dev.0
  - cloud_federation_api: 1.17.0
  - dav: 1.36.0
  - federatedfilesharing: 1.23.0
  - federation: 1.23.0
  - files: 2.5.0
  - files_pdfviewer: 6.0.0-dev.0
  - files_reminders: 1.6.0
  - files_sharing: 1.25.2
  - files_trashbin: 1.23.0
  - files_versions: 1.26.0
  - firstrunwizard: 6.0.0-dev.0
  - logreader: 6.0.0
  - lookup_server_connector: 1.21.0
  - nextcloud_announcements: 5.0.0
  - notifications: 6.0.0
  - notify_push: 1.3.1
  - oauth2: 1.21.0
  - password_policy: 5.0.0-dev.0
  - photos: 6.0.0-dev.0
  - privacy: 5.0.0-dev.0
  - profile: 1.2.0
  - provisioning_api: 1.23.0
  - related_resources: 4.0.0-dev.0
  - serverinfo: 5.0.0-dev.0
  - settings: 1.16.0
  - spreed: 23.0.2
  - survey_client: 5.0.0-dev.0
  - text: 7.0.0-dev.3
  - theming: 2.8.0
  - theming_customcss: 1.20.0
  - twofactor_backupcodes: 1.22.0
  - twofactor_totp: 15.0.0-dev.0
  - twofactor_webauthn: 2.6.0
  - unroundedcorners: 1.1.5
  - updatenotification: 1.23.0
  - user_status: 1.13.0
  - viewer: 6.0.0-dev.0
  - webhook_listeners: 1.5.0
  - workflowengine: 2.15.0
Disabled:
  - admin_audit: 1.23.0
  - app_api: 33.0.0 (installed 33.0.0)
  - circles: 33.0.0 (installed 31.0.0)
  - comments: 1.23.0 (installed 1.23.0)
  - contactsinteraction: 1.14.1 (installed 1.14.1)
  - dashboard: 7.13.0 (installed 7.13.0)
  - encryption: 2.21.0
  - files_downloadlimit: 5.1.0-dev.0 (installed 5.1.0-dev.0)
  - files_external: 1.25.1
  - recommendations: 6.0.0-dev.0 (installed 6.0.0-dev.0)
  - sharebymail: 1.23.0 (installed 1.23.0)
  - support: 5.0.0 (installed 5.0.0)
  - suspicious_login: 11.0.0-dev.0
  - systemtags: 1.23.0 (installed 1.23.0)
  - twofactor_nextcloud_notification: 7.0.0
  - user_ldap: 1.24.0
  - weather_status: 1.13.0 (installed 1.13.0)
```

### Nextcloud Signing status

```shell

```

### Nextcloud Logs

```json
{"reqId":"bpQRgCG1n6JJOTvkzYdW","level":3,"time":"2026-04-01T10:46:28+00:00","remoteAddr":"192.168.1.1","user":"yura","app":"jsresourceloader","method":"GET","url":"/index.php/settings/user/workflow","scriptName":"/index.php","message":"Could not find resource core/js/systemtags.js to load","userAgent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:149.0) Gecko/20100101 Firefox/149.0","version":"33.0.0.16","data":{"app":"jsresourceloader"}}
{"reqId":"ZeftS8kQCkP5D5wW6y4Z","level":3,"time":"2026-04-01T12:07:31+00:00","remoteAddr":"192.168.1.1","user":"yura","app":"jsresourceloader","method":"GET","url":"/index.php/settings/user/workflow","scriptName":"/index.php","message":"Could not find resource core/js/systemtags.js to load","userAgent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:149.0) Gecko/20100101 Firefox/149.0","version":"33.0.0.16","data":{"app":"jsresourceloader"}}
```

### Additional info

The issue appears to be caused by a reference to a removed or relocated script in Nextcloud 33.
The file core/js/systemtags.js is not present in the current version.

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Uh oh!

[Bug]: Nextcloud 33 tries to load missing `/core/js/systemtags.js` #59385

⚠️ This issue respects the following points: ⚠️

Bug description

Steps to reproduce

Expected behavior

Nextcloud Server version

Operating system

PHP engine version

Web server

Database engine version

Is this bug present after an update or on a fresh install?

Are you using the Nextcloud Server Encryption module?

What user-backends are you using?

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Uh oh!

[Bug]: Nextcloud 33 tries to load missing /core/js/systemtags.js #59385

Description

⚠️ This issue respects the following points: ⚠️

Bug description

Steps to reproduce

Expected behavior

Nextcloud Server version

Operating system

PHP engine version

Web server

Database engine version

Is this bug present after an update or on a fresh install?

Are you using the Nextcloud Server Encryption module?

What user-backends are you using?

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

Metadata

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Issue actions

[Bug]: Nextcloud 33 tries to load missing `/core/js/systemtags.js` #59385